Mercury compounds and processes of producing same.



No Drawing.

UNITED STATES PATENT OFFICE.

ALEX B. DAVIS, 01E INDIANAPOLIS,- -1NDIANA, ASSIGNOR TO- THE ELI LILLY AND COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

MERCURY COMPOUNDS AND PROCESSES OF PRODUCING SAME.

T all whom it may concern:

Be it known thatI, ALEX B; DAvIs: a

' citizen of-the United States, residing at Indianapolis, Marion county, and State of 111- diana, have invented and discovered certain new and useful Improvements in Mercury Compounds and Processes of Producing Same, of which the followingds a specification: y

My invention relates to compounds of mercury of the coumarin series, more especially to those members of the series containing a free or substituted hydroxyl group in the benzene ring; and to processes'for prodissolved in alcohol, either pure or dilute, and one molecular proportion of a mercury ducing [the same. Suchcompounds may be formed from beta-methyl-umbelliferone,

.beta-phenyl-umbelliferone, S-oXy-cOumarin,

5-oxy coum'arin, etc. Such a compound is salt in solution,v more especially mercuric hot. In concentrated solutionsthe mercury acetate, is added While both solutions are compound may begin to. separate at once, while more dilute solutions may remain clear for several minutes before the compound begins to separate, which it-does, usually in the form of fine, nearly white.

' needles, readily soluble in dilute solutions of fixed alkalis. and sparingly soluble in alcohol.

\The solution of the cgmpound in alkali may he evaporated. to dryness in'a vacuum at a temperature not to exceedflOO" (3., when the mercury compound is obtained in com- Y 100 parts of'water. Almost immediately the two combine and the mercury derivative'of the umbelliferone begins to separate in fine white needle like crystals. fiThese-are filtered off, and dried and are thendissolved in one molecular proportion of caustic soda solution; the resulting solution is evaporated to dryness in a vvacuum at'atempera ture not exceeding 100? C. when the sodium compound of the mercury derivative of specification of Letters Patent,

a specificexample, 17 .7 parts i of Patented not. 25, 1 9.13.

Application filed u vemper 1a, 1912 Serial 110,131,902.

-beta-methyl-umbelliierone .is obtained as a yellow mass.

The corresponding compound of beta-phenyl-umbelliferone maybeprepared by substituting 24.9 parts of beta-phenylmmbelliferone for'the 17.7 parts beta-methyl-umbelliferone and increasing thealcohol to a suflicient quantity to dissolve the, compound. The mercury derivative of' beta-methyl-umbelliferone contains. about 47% of mercury and has probably the following constitution l i o cn, i

HO- :0 i

, This-constitution may difler according to the difierent'solv'ents which may be used in the process; that is, the methoxyl group will be replaced by any other alcohol group, as for instance if ethylalcoholbe used instead of methyl alcohol as a solvent, and the reactionyallowed to take place, then the 'met-hoxyl would be replaced by ethoxyl.

In addition to the 'oxycoumarin compounds particularly mentioned in the description of the specific processes abovefset forth, a number of other compounds which lend themselves to the manufacture of these new mercury compounds may be used, any of which compounds may ;be,represented by the following formula inwhich X m, bee alkali metal, or a may be 'an' acetyl or b enzoyl or similar-pureor substituted acid radical, or it may be an aryl or alkyl group either pure or substituted;and Y may be an aryl or alkyl group either pure or substituted." Mercury de- 7 rode surgical instruments, irritate the skin,

- may be the moth yl mercu nor precipitate albumin. The mercury is not precipitated from these compounds by cold ammonium sulfid except on long stand; ingi nor by alkalis except upon continued 1 1n Ha ing thus described my invention what 1-. a mercury compound consisting of a mercury salt combined with an oxycouma rin, substantially asdescribed. I

- 2. 'A mercury compound consisting of a salt combined with one, su stantially as described. I

3 A mercury derivative which consists of asalt of mercury combined withan oxycoumaria, in which the mercury is combined by'one valence with a carbon atom of the oxycoumarin and by the other valence with the group originally present in the mercury salt, substantially as described.

i. A mercury compound which is formed by the combination of mercury with compounds mule:

xo-f

I in which X may be a radical capable of substituting hydrogen in a hydroxyl and Y any radical capable of substituting group in beta-methyl-umbelliferone.

5. A mercury compound soluble in Water consisting of the combination of an oxycoumarin, a mercury salt and a base, substantially as described.

an umbellifer SOlllt10I1 of a mercury compound of the oxycouinarin series subof the type represented by the for j consists of a mercury salt, then adding a O-GH; C111 in which Xis analkali metal.

7. The process of producing a mercury derivative which consists in adding to a salt, a solution of a stantially as described.

.8. The process of prwlrrfing a. water soluble salt of mercury derivative of the oxycoumarin series which consists in combining the mercury derivative with a base,

and evaporating the solution to dryness in.

a vacuum at a temperature not to cxcccd (1, substantially as described.

9. The process of producing a water soluble salt of a. mercury derivative which in adding to a solution of a compound of the cxycoumarin series, a solution base and evaporating the solution to dryness in a vacuum at a temperature not to exceed 100 (1, substantially as described.

In witness whereof I have hereunto set my hand and seal at Indianapolis, Indiana, this fifth day of November,- A.- D. nineteen hundred and twelve.

ALEX B. DAVIS. [L. s.] Witnesses:

FRANK R. ELnnnn, HARLEY W. liIIORBHAMI'IL. 

